Please use 100% Ethenol. DO NOT use medical alcohol, which may damage the printer head.
Regularly clean the print head and supply sensors once change a new media to keep printer performance and extend printer life.
The maximum printing ratio per dot line is 15% for this printer. To print the full web black line, the maximum black line height is limited to 40 dots, which is 5mm for 203 DPI resolution printer and 3.3mm for 300 DPI resolution printers..
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